Update git submodules

* Update docs/submodules/nfvbench from branch 'master'
  - Move to tag 1.2.5

    Change-Id: Ibb4047d8de260cbcf5409fcff703ada08d73b209
    Signed-off-by: ahothan <ahothan@cisco.com>

diff --git a/docs/submodules/nfvbench b/docs/submodules/nfvbench
index 1000fc2..e275e0b 160000 (submodule)
--- a/docs/submodules/nfvbench
+++ b/docs/submodules/nfvbench
@@ -1 +1 @@
-Subproject commit 1000fc2ad1230a694ffcc16797a4ef528e63ed8e
+Subproject commit e275e0bc2ae9ea1906190d81c9e78e85265734df